Area, volume and Circumference Review

What does the red line represent?

• The circumference of the circle

• The diameter of the circle

• The radius of the circle

The diameter of a circle is 10 in.

What is its radius?

• 20 in.

• 5 in.

Does this circle show the radius or diameter?

• radius

• diameter

What is the radius of this circle?

• 40 cm

• 20 cm

• 10 cm

True or False: The diameter is being pictured here.

• True

• False

True or False: The diameter is twice as long as the radius.

• True

• False

The diameter of a circle is 10 inches. What is the radius?

• 10 inces

• 20 inches

• 5 inches

• 2.5 inches

What is the circumference of a circle with a diameter of 56 m?

• 175.8 m
• 176.8 m
• 165.8 m
• 186.8 m

The circumference of a circle is

• The measurement from an edge of a circle to another edge.
• The measurement around the circle
• The measurement from an edge of a circle to another edge going through the center
• The measurement from the center of the circle to an edge of the circle